<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>常用类名</title>
</head>
<body>
<!--
常用布局名词
位置:
1.顶部导航条:topbar
2.页头:header,page-header
3.导航:nav,navigator,navbar
4.搜索框:search,search-box
5.横幅广告宣传图:banner
6.主要内容:content,main
7.侧边栏:aside,sidebar
8.页脚:footer,page-footer
-->
</body>
</html>